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Related papers: Finsler-Lagrange Geometries and Standard Theories …

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We present an introduction to the geometry of higher order vector and co-vector bundles (including higher order generalizations of the Finsler geometry and Kaluza--Klein gravity) and review the basic results on Clifford and spinor…

Differential Geometry · Mathematics 2007-05-23 Sergiu I. Vacaru , Nadejda A. Vicol

A common feature of all Quantum Gravity (QG) phenomenology approaches is to consider a modification of the mass shell condition of the relativistic particle to take into account quantum gravitational effects. The framework for such…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Florian Girelli , Stefano Liberati , Lorenzo Sindoni

Finsler geometry motivates a generalization of the Riemannian structure of spacetime to include dependence of the spacetime metric and associated invariant tensor fields on the four-velocity coordinates as well as the spacetime coordinates…

High Energy Physics - Theory · Physics 2007-05-23 Howard E. Brandt

It is shown that the problem of a possible violation of the Lorentz transformations at Lorentz factors $\gamma >5\times 10^{10} ,$ indicated by the situation which has developed in the physics of ultra-high energy cosmic rays (the absence…

General Relativity and Quantum Cosmology · Physics 2015-06-25 G. Yu. Bogoslovsky , H. F. Goenner

We synthesize and extend the previous ideas about appearance of both noncommutative and Finsler geometry in string theory with nonvanishing B--field and/or anholonomic (super) frame structures \cite{vstring,vstr2,vnonc,vncf}. There are…

High Energy Physics - Theory · Physics 2007-05-23 Sergiu I. Vacaru

We investigate the bounce realization in the framework of generalized modified gravities arising from Finsler and Finsler-like geometries. In particular, the richer intrinsic geometrical structure is reflected in the appearance of extra…

General Relativity and Quantum Cosmology · Physics 2019-03-12 Georgios Minas , Emmanuel N. Saridakis , Panayiotis C. Stavrinos , Alkiviadis Triantafyllopoulos

We present our Finsler spacetime formalism which extends the standard formulation of Finsler geometry to be applicable in physics. Finsler spacetimes are viable non-metric geometric backgrounds for physics; they guarantee well defined…

General Relativity and Quantum Cosmology · Physics 2019-01-21 Christian Pfeifer , Mattias N. R. Wohlfarth

The correspondence between Riemann-Finsler geometries and effective field theories with spin-independent Lorentz violation is explored. We obtain the general quadratic action for effective scalar field theories in any spacetime dimension…

High Energy Physics - Theory · Physics 2018-10-18 Benjamin R. Edwards , Alan Kostelecky

We study modifications of general relativity, GR, with nonlinear dispersion relations which can be geometrized on tangent Lorentz bundles. Such modified gravity theories, MGTs, can be modeled by gravitational Lagrange density functionals…

General Physics · Physics 2017-06-13 Panayiotis Stavrinos , Olivia Vacaru , Sergiu I. Vacaru

We apply the method of moving anholonomic frames, with associated nonlinear connections, in (pseudo) Riemannian spaces and examine the conditions when various types of locally anisotropic (la) structures (Lagrange, Finsler like and more…

General Relativity and Quantum Cosmology · Physics 2015-06-25 Heinz Dehnen , Sergiu I. Vacaru

The space of anisotropic $r$-contravariant $s$-covariant $\alpha$-homogeneous tensors on a manifold admits a functorial structure where vertical derivatives $\dot{\partial}$ and contractions $\imath_{\mathbb{C}}$ by the Liouville vector…

Differential Geometry · Mathematics 2025-04-22 Miguel Sánchez , Fidel F. Villaseñor

Radu Miron's approach to modelling of generalized Lagrange, Finsler and Kaluza-Klein spaces on vector (super) bundles provided with compatible nonlinear and distinguished connections and metric structures is discussed in connection with the…

Mathematical Physics · Physics 2008-11-06 Sergiu I. Vacaru

Nonholonomic distributions and adapted fame structures on (pseudo) Riemannian manifolds of even dimension are employed to build structures equivalent to almost Kahler geometry and which allows to perform a Fedosov-like quantization of…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Sergiu I. Vacaru

The book "Handbook of Finsler geometry" has been included with a CD containing an elegant Maple package, FINSLER, for calculations in Finsler geometry. Using this package, an example concerning a Finsler generalization of Einstein's vacuum…

Differential Geometry · Mathematics 2015-06-16 Nabil L. Youssef , S. G. Elgendi

In recent years, Planck-scale modifications to particles' dispersion relation have been deeply studied for the possibility to formulate some phenomenology of Planckian effects in astrophysical and cosmological frameworks. There are some…

General Relativity and Quantum Cosmology · Physics 2017-02-24 Iarley P. Lobo , Niccoló Loret , Francisco Nettel

Lorentz invariance is one of the foundations of modern physics; however, Lorentz violation may happen from the perspective of quantum gravity, and plenty of studies on Lorentz violation have arisen in recent years. As a good tool to explore…

General Relativity and Quantum Cosmology · Physics 2023-05-03 Jie Zhu , Bo-Qiang Ma

A consistent theory of quantum gravity (QG) at Planck scale almost sure contains manifestations of Lorentz local symmetry violations (LV) which may be detected at observable scales. This can be effectively described and classified by models…

Mathematical Physics · Physics 2015-05-19 Sergiu I. Vacaru

I do not agree with the authors of papers arXiv:0806.2184 and arXiv:0901.1023v1 (published in Phys. Lett., respectively, B668 (2008) 453 and B676 (2009) 173). They consider that \textit{"In Finsler manifold, there exists a unique linear…

General Relativity and Quantum Cosmology · Physics 2010-07-23 Sergiu I. Vacaru

We study possible links between quantum gravity phenomenology encoding Lorentz violations as nonlinear dispersions, the Einstein-Finsler gravity models, EFG, and nonholonomic (non-integrable) deformations to Ho\v{r}ava-Lifshitz, HL, and/or…

Mathematical Physics · Physics 2013-03-15 Sergiu I. Vacaru

The aim of the present paper is to construct and investigate a Finsler structure within the framework of a Generalized Absolute Parallelism space (GAP-space). The Finsler structure is obtained from the vector fields forming the…

Differential Geometry · Mathematics 2013-07-16 Nabil L. Youssef , Amr M. Sid-Ahmed , Ebtsam H. Taha